Load Specifications
Load data in caliber 6 x 52 R Bretschneider with .243 | 80gr | Barnes TTSX BT bullet and 39 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant AR-Comp, IMR 3031 and Hodgdon H322.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 94% | 42,583 psi | 89% | 2720 fps | 99.3% |
| Accurate 2460 | <<locked>> | 90% | 40,712 psi | 85% | 2700 fps | 96.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 39,044 psi | 82% | 2726 fps | 99.1% |
| Accurate 2520 | <<locked>> | 94% | 41,060 psi | 86% | 2746 fps | 96.2% |
| Accurate 4064ᴾ | <<locked>> | 100% | 36,289 psi | 76% | 2680 fps | 96.3% |
| Accurate LT-30 | <<locked>> | 84% | 40,698 psi | 85% | 2595 fps | 97.9% |
| Accurate LT-32 | <<locked>> | 84% | 41,104 psi | 86% | 2598 fps | 96% |
| ADI AR 2207 | <<locked>> | 84% | 42,917 psi | 90% | 2700 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 40,959 psi | 86% | 2730 fps | 97.8% |
| Alliant AR-Comp | <<locked>> | 96% | 42,018 psi | 88% | 2795 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 90% | 43,076 psi | 90% | 2746 fps | 99.8% |
| Alliant Reloder-7 | <<locked>> | 82% | 41,553 psi | 87% | 2654 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 41,829 psi | 87% | 2635 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 90% | 42,525 psi | 89% | 2759 fps | 98.2% |
| Hodgdon H335 | <<locked>> | 88% | 40,379 psi | 84% | 2717 fps | 96.7% |
| Hodgdon H4198 | <<locked>> | 82% | 42,366 psi | 89% | 2641 fps | 97.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,894 psi | 67% | 1736 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 42,612 psi | 89% | 2825 fps | 98.9% |
| IMR 4198 | <<locked>> | 88% | 42,554 psi | 89% | 2690 fps | 100% |
| Lovex D073.4 | <<locked>> | 84% | 41,234 psi | 86% | 2713 fps | 95.9% |
| Lovex D073.6 | <<locked>> | 98% | 41,611 psi | 87% | 2769 fps | 96.3% |
| Norma 200 | <<locked>> | 86% | 42,975 psi | 90% | 2726 fps | 100% |
| Norma 202 | <<locked>> | 98% | 43,178 psi | 90% | 2769 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,778 psi | 66% | 1778 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 42,293 psi | 88% | 2726 fps | 96% |
| Rottweil R 901 | <<locked>> | 94% | 41,655 psi | 87% | 2707 fps | 96.8% |
| Shooters World AR Plus | <<locked>> | 84% | 41,234 psi | 86% | 2713 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 98% | 41,611 psi | 87% | 2769 fps | 96.3% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 41,234 psi | 86% | 2726 fps | 96.8% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 41,727 psi | 87% | 2710 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 41,394 psi | 86% | 2641 fps | 96.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,784 psi | 83% | 2628 fps | 97.5% |
| Somchem S335 | <<locked>> | 96% | 42,728 psi | 89% | 2690 fps | 98.1% |
| Vihtavuori N120 | <<locked>> | 84% | 43,062 psi | 90% | 2657 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 41,597 psi | 87% | 2657 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 94% | 40,785 psi | 85% | 2651 fps | 99% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,698 psi | 85% | 2740 fps | 99.3% |
| Vihtavuori N140 | <<locked>> | 98% | 41,147 psi | 86% | 2707 fps | 97.3% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 42,279 psi | 88% | 2740 fps | 97% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 27,064 psi | 57% | 2369 fps | 95% |
| Accurate 2460 | <<locked>> | 86% | 35,534 psi | 74% | 2592 fps | 95% |
| Accurate 2495 | <<locked>> | 90% | 27,572 psi | 58% | 2464 fps | 95.9% |
| Accurate 2520 | <<locked>> | 92% | 38,014 psi | 79% | 2684 fps | 95.3% |
| Accurate 4064 | <<locked>> | 98% | 34,084 psi | 71% | 2631 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 36,085 psi | 75% | 2500 fps | 96.7% |
| Accurate LT-32 | <<locked>> | 82% | 38,725 psi | 81% | 2552 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 37,797 psi | 79% | 2608 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 33,272 psi | 70% | 2556 fps | 95.5% |
| Alliant AR-Comp | 20.9 gr | 80% | 24,889 psi | 52% | 2372 fps | 96.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,488 psi | 66% | 2500 fps | 98% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,102 psi | 82% | 2608 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,084 psi | 71% | 2477 fps | 96.5% |
| Hodgdon H322 | 22.1 gr | 82% | 32,460 psi | 68% | 2536 fps | 95.2% |
| Hodgdon H335 | <<locked>> | 86% | 37,579 psi | 79% | 2657 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 80% | 39,856 psi | 83% | 2592 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,438 psi | 49% | 1552 fps | 100% |
| IMR 3031 | 23 gr | 88% | 30,879 psi | 65% | 2552 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 33,649 psi | 70% | 2507 fps | 99.1% |
| Lovex D073.4 | <<locked>> | 82% | 38,247 psi | 80% | 2654 fps | 95% |
| Lovex D073.6 | <<locked>> | 96% | 38,566 psi | 81% | 2707 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 35,288 psi | 74% | 2575 fps | 99.3% |
| Norma 202 | <<locked>> | 92% | 35,418 psi | 74% | 2612 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,090 psi | 48% | 1585 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 39,349 psi | 82% | 2667 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 90% | 36,985 psi | 77% | 2612 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 82% | 38,247 psi | 80% | 2654 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 96% | 38,566 psi | 81% | 2707 fps | 95.5% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 36,187 psi | 76% | 2618 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,010 psi | 67% | 2497 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 36,564 psi | 76% | 2546 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 33,112 psi | 69% | 2484 fps | 95.4% |
| Somchem S335 | <<locked>> | 88% | 32,924 psi | 69% | 2487 fps | 95.3% |
| Vihtavuori N120 | <<locked>> | 80% | 37,971 psi | 79% | 2572 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,197 psi | 63% | 2411 fps | 97.3% |
| Vihtavuori N133 | <<locked>> | 82% | 27,862 psi | 58% | 2359 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 88% | 27,905 psi | 58% | 2444 fps | 95.6% |
| Vihtavuori N140 | <<locked>> | 92% | 33,939 psi | 71% | 2552 fps | 95% |
| Vihtavuori N540 | <<locked>> | 96% | 37,086 psi | 77% | 2638 fps | 95.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 39 powders for 6 x 52 R Bretschneider loaded with the .243 | 80gr | Barnes TTSX BT. IMR 3031 delivers the highest muzzle velocity at 2,825 fps; across all powders the maximum-charge window runs from 1,736 fps to 2,825 fps. Accurate 2495 gives the best case fill at 100 %, and 39 of the 39 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 66–90 %, leaving at least 10 % headroom. The 80.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Hodgdon TrailBoss reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Alliant AR-Comp, IMR 3031, Hodgdon H322 rank at the top here: for 6 x 52 R Bretschneider with the .243 | 80gr | Barnes TTSX BT they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.